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Patent Agency Ranking
公开(公告)号：DE4000609A1
公开(公告)日：1991-07-18
申请号：DE4000609
申请日：1990-01-11
Applicant: BASF AG
Inventor： MEISSNER RUPRECHT , GEIERHAAS HERBERT DR , ADLKOFER JUERGEN DR , LEBERT ULRICH DR
Abstract: Catalyst for oxidn. of SO2 to SO3 consists of a SiO2 support activated with V and alkali metal cpds. The support: has a pore vol. fraction of 10-30% pores with dia. up to 15nm, 25-60% pores with dia. 15-200 nm and 10-60% pores with a dia. of over 200nm. The catalyst is produced by mixing SiO2 of the specified pore dia. with enough liquid (water and/or H2SO4) to give a mouldable mixt., moulding, drying and calcining the moulding (at 450-650 deg.C), impregnating the calcined material with activators and drying. USE/ADVANTAGE - The catalyst has very good mechanical properties (hardness and attrition in both the fresh and aged state), high activity over a wide temp. range (ca. 380-420 deg.C) and very low pressure drop. The high activity at relatively low temp. makes it possible to reduce operating costs by using a lower temp. than usual and also reduces SO2 emissions at low temp.
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公开(公告)号：DE3333679A1
公开(公告)日：1985-04-04
申请号：DE3333679
申请日：1983-09-17
Applicant: BASF AG
Inventor： GEIERHAAS HERBERT DR , NETH NORBERT DR , ADLKOFER JUERGEN DR
Abstract: In the oxidation of hydrogen sulphide contained in exhaust gases and/or organic sulphur compounds, catalysts are used which contain a) cobalt oxide and b) tungsten oxide and/or molybdenum oxide as active components and which are applied to a support of silicic acid which has an internal surface area (according to BET) of 50 to 200 m /g and a water uptake capacity of 60 to 120 ml/100 g.
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公开(公告)号：AT89188T
公开(公告)日：1993-05-15
申请号：AT89200705
申请日：1989-03-18
Applicant: METALLGESELLSCHAFT AG , BASF AG
Inventor： DOERR KARL-HEINZ , GRIMM HUGO , NEUMANN HEINZ , ADLKOFER JUERGEN DR
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公开(公告)号：DE58904308D1
公开(公告)日：1993-06-17
申请号：DE58904308
申请日：1989-03-18
Applicant: METALLGESELLSCHAFT AG , BASF AG
Inventor： DOERR KARL-HEINZ , GRIMM HUGO , NEUMANN HEINZ , ADLKOFER JUERGEN DR
Abstract: In flue gases or other humid exhaust gases which contain NOx and SO2, the NOx content is reduced and the SO2 content is oxidized to SO3 by a catalytic processing and the SO3 content is subsequently condensed as sulfuric acid. In order to prevent a clogging and deterioration of the catalyst and a contamination of the sulfuric acid the flue gas is subjected before the catalytic processing to a fine dedusting by a scrubbing with hot dilute sulfuric acid. In dependence on the water content of the flue gases the concentration of sulfuric acid in the dilute sulfuric acid and the temperature of the latter are adjusted so that no water will be transferred from the flue gases to the dilute sulfuric acid and no water or only a small amount of water will be transferred from the dilute sulfuric acid to the flue gas.
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公开(公告)号：DE3810337A1
公开(公告)日：1989-10-05
申请号：DE3810337
申请日：1988-03-26
Applicant: METALLGESELLSCHAFT AG , BASF AG
Inventor： DOERR KARL-HEINZ , GRIMM HUGO , NEUMANN HEINZ , ADLKOFER JUERGEN DR
Abstract: In flue gases or other humid exhaust gases which contain NOx and SO2, the NOx content is reduced and the SO2 content is oxidized to SO3 by a catalytic processing and the SO3 content is subsequently condensed as sulfuric acid. In order to prevent a clogging and deterioration of the catalyst and a contamination of the sulfuric acid the flue gas is subjected before the catalytic processing to a fine dedusting by a scrubbing with hot dilute sulfuric acid. In dependence on the water content of the flue gases the concentration of sulfuric acid in the dilute sulfuric acid and the temperature of the latter are adjusted so that no water will be transferred from the flue gases to the dilute sulfuric acid and no water or only a small amount of water will be transferred from the dilute sulfuric acid to the flue gas.
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